Measurement of displacement on a small-scale slope by RTK-GNSS to detect failure time

Key Points

• The research investigates the use of RTK-GNSS for measuring displacement on small-scale slopes to enhance failure detection methods.
• Installed RTK-GNSS antennas and displacement meters on a 10m high natural slope.
• Performed multi-stage excavation to induce measurable displacement.
• Compared displacement measurements from RTK-GNSS with those from traditional displacement meters.
• RTK-GNSS measurements showed similar trends to displacement meter data before slope failure.
• RTK-GNSS recorded small fluctuations even close to failure without significant increases in displacement.
• Displacement at failure measured by GNSS was smaller than that recorded by displacement meters.